Furnace construction.



J. B. LADD & D. BAKER. FURNAGE CONSTRUCTION.

APPLICATION FILED MAR. 29, 1911.

1,027,738. PatentedMay 28, 1912..

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/ I. mit/Snow@ A 'memessTA JAMES D. LADD AND DAVID BAxia'oF P HIDADELPHIA, PENNSYLVANIA.

' FURNACD coNs'ritUc'iion.-

I I- DAV'ID BAKER, citizens ofthe UnitedStates,

ficially fe'cts jof of icon structionand combination of partsvhereinafter described and claimed. .-540

'b'o'lie ticularly to Figs. Atheusi'ial external `-shell of the vfurnace sup- 'ported 'at its base residing at Philadelphia, in the county of Philadelphia and State of' Pennsylvania, have invented' certain new and useful Imrovements which the following is a specification, reference being had therein to. the .accompanying drawing. i

. This invention relates to the construction of blast or like furnaces and has reference more `particularlyto the part of thefurnace i above the .-boshes,'t hat is the portion. of the furnace 'extending usually from l'the supportingcoliirnns upwardly.-

The objects of the invention are to reduce the-thickness of the wall of this part of the furnacev and to substitute for th'el usual massive fire brick wall,` a thin wall.' form .that it may be' artif cooled -to'resist'A the destructive efthe-heat within the. furnace, -will be l: capable of; withstanding the severe straint to which inpractical use it is'subjected, and which may" be substituted for :the usual",

massive're brick wall without the. necessity,

with transverse faces,"'the funct`on of which is to retain the structure .of such of rebuilding the furnace.

With these endsv in vview u invention:

lura'lityo i from slipping downwardly is burned consists in a furnace in whicha superposed rings'com rising eac a-'series o upright water-coole lates, is `arranged withinan inclosingv shei) fea-tures pointed lout in the claims.

The invention consists 'also in the details the' accompanying drawings z-Figure 1 'is' a v'vertical sectional elevation through Fig. 1. Fig. 3 is an elevation` of line a-a of of. which the wall is formed.

one of the plates vFig. '.41 'is A a 'vertical sectional elevation, a"A furnace having our invention ena,-4

throu h ther'ein'in modified form.

Referriiigto the drawings: referring par- 1, 2 and 3 i-1.' represents by column'sQ, and supporting at its upper vwhich shell surrounds and incloses thej ofthe furnace from-the top of the b'oshe's Specification 'of Letters Patent. Appnmnnniga Maren 29, i911. serial No. 617,604.-

' in Furnace Construction, of

1, and supported in an`.improved 'manner, as-will be' fully de-g scribedl 'in the specification and' the novel'f we propose to arti'cially cool the saine.

- let openings and end the furnace' to bei? firmly and Patented May 28,1912.

upwardly.

therefrom, a wall 4 consisting of a: number of superposed belts or sections 5, 5a, etc., in thepresent instance four sections, each comprising a series of upright segmental plates or staves 6*-6, etc.,' assembled edge to edge to form a belt, tlre said sections thus formed being superposed one upon the other so as to constitute in effect a continuous circular wall extending upwardly from the boslies to the. top of the, furnace. :The wall thus formed is lined with'f're brick 7, and is supported a't its'base bythe columns 2,the relation of the wall t'o the furnaeeshell being .11n applying ourinvention, we =erect within the shell and some distance such that acontinuous circumferential space I' is leftbetweenzthe two.

`The plates or staves arepreferably in the form of i'ron` castings, shown more particularly in Fig. 3, havin'o' an inner curved face 65, an' upper outwardly extending flange 6b,

and a lower outwardly extending foot 6", so that the plates of the s evealsections may be supported-one upon the ot-lier, with the Ufoot, of the upper plate resting on the upper shown in `flange ofthe plate' beneath, as Fig. -1. -The plates are further'provided flanges" or ribs 6d on their` brick lining in place and prevent the Asame through at anypoint. In order .that theipl'ates maybe kept cooland the wall prevented from being burned or destroyedbythe intense heat in the furnace,

`This is preferably effected by forming a passage 6 through the plates for the circu- 2 lation of cold water, .the passage entering each 'plate 'atone side at"its baise. and pursuing through the surrounding furnaceshell, 'as shown in Fig. 1.3-

i :wat the :pares asemiidfside by Side,

as shown, to form thecircular sections or belts, and' the'zflatter .superposed one upon the other, the feet ofthe upper plates will rest upon and be supported. by the; out; wardly vextending upper anges on, the plates beneath,- and these abutting'parts' are in case the lining rigidly lconnected together byy a circuitouscourse therethrough .back l'and forth lfrom one end to the other, leaving lthe plate atthe opposite side, suitable inlet -and discharge pipes-9 and 9a r,being con- .nectedrespectively,with the inlet and outl.'

' vextei'iding outwardlylproperly withstand--and..resist-.the thrust; "tgagamst the plates, we repose to brace and z the plates.

h'50`irliere the furnace shell bolts 10 or'by other suitable means.` feet of the lower series of plates will restupoii and be supported by a ring 11, which in turn receives support from the columns 5 2.V By this construction there is formed a continuous practically integral wall structure extending from the columns upwardly to the top ofa the furnace and within the surrounding shell, and disconnected therei0 from, the space between the wall and shell being preferably filled with a suitable materia such as concrete, granulated slag or' loam, and the like, as. indicated at-A in Fi 1. .L.,In order that this wall structure wil 'strengthenthe .samen y encircling band 12--1ghletc,,surroundingtheplates Aof the. 'severalv sections andv 'ap edges of the horizonta ribs 13 projecting outwardly from the plates, the bandsbeing fastened to the -plates by horizontal bolts 14* passing through the hands and through the plates to. the inner side. i

In Fig. L we have shown a modified embodiment. of our invention. In this case fthe form and construction of the individual plates and the general mode of assemblage is thesame as the construction of Fig. 1, 50 butin this modified embodiment, dependeiice is placed on the surrounding shell of the furnace for resist-ing the thrust against This is effected by su porting the plates at intervals from the siell, the outwardly extending flanges on the upper f .ends of the plates being formed with downwaldly extending lips 15 which interlock with flanged rings 16 fixed to the inner side of the furnace shell at intervals to correspond to the position of the flanges on the several sections of plates.

The first construction described, that is that illustrated in Fig. 1 where the plates are strengthened by encircling bands, is applicable to cases where the furnace shell itself does not possess suflicient strength to. resist the thrust againstI the plates. The modified construction described, that is that illustrated in Fig. 4, is ap ilicable to cases ees possess the requisite strength to enable it to take the thrust of the plates. l

The primary ob'ect of our invention is to substitute a thin wall as made up ofv the artificially cooled fire brick lined plates or staves, for the usual massive wall of the furnace, and is especially designed to replace the massive wall when the latter becomes destroyed or cut away by the action 60, of the heat to such extent that it is renderedunfit for further use. .This replacement iiriprising a plura BEST AVAILABLE copy method the damaged massive wall is first removed from within its inclosing shell and the latter left intact, then the new composite wall is erected within the shell so as to leave a circumferential s ace between the new wall and the shell, an in some cases an additionalstep is carried out of filling in the circumferential space with a filling inareplacement a great saving of time and exense is effected in the restoration of the ness of. the former wa 'which maybes artificially cooled soas to genietend- Withers im'ilreusnsestlhe severe heat within tliefurnace. "lVe have' iii-*tho accompanying drawings illustrated certain embodiments of our in; vention which -are deemed suitable for the realization of tlie objects to be attained, but it will be understood that the invention is not limited to the particular and specific details shown, but may be modified within the skill of the mechanic provided the operation will be substantially as above de scribed, and it will be further understood thatat-he invention is not limited to anyparticular form or construction of the parts except in so, far as such limitations are speci- ,fied in the claims.

Having thus described .our invention, what we claim is 1. In a furnace and iu combination with the same and comprising a plurality of superposed rings or sections consisting each of a series of upright water-cooled lates, said plates being supported at interva s, one above the other, bythe inclosing shell.

2. In a furnace and in combination with an iuclosing shell, a wall situated within the shell and comprising a plurality of superposed rinOs or sections, consisting each of upright' plates provided with outwardly extending flanges, said flanges being supported from the shell.

3. In a furnace and in combination with an inclosing shell, a wall situated within the shell and spaced therefrom, and comity of superposed rings or sections, each consisting of a series of upright water-cooled plates, and strengthenine bands encircling said plates. n testimony whereof we have affixed our signatures in presence of two witnesses.

JAMES B. LADD. DAVID BAKER.. lVitnessesz- ..HELEN I.. KAUFFMAN,

\' volves a 4method which forms a partof.3

". 1- I .Copies ol this patent'may be obtained for vecents each, by addressing thea" Commissioner of P terial, such as cement and t-he like. By suc'a4 amaged structureand a new wall is pro-l duced very thin in com arisen to' the tliickf4 and of a character an inclosing shell, ay wall'situated within.

The \o1r'.invention, and in carrying out this 

